我想在我的JTextPane中实现Find机制（例如文本编辑器或word）。
我希望它具有下一个/上一个选项（向上/向下箭头），并突出显示它找到的所有单词。
有一个简单的方法吗？
最佳答案
我不是专家，我发现以下代码有效：
public static void GetTextToFindAndFind(String textToFind, int ignorecase, int findCounter){
// findCounter = 0 or 1. 0 represents find and 1 represents findCounter.
String Current2 = textPane.getText();
if(findCounter ==0){
if(textToFind == null){
optionPane.showMessageDialog(null, "Please Enter Text.", "Error", 0);
}
else if(textToFind.isEmpty()){
optionPane.showMessageDialog(null, "Please Enter Text.", "Error", 0);
}
else{
// Use any Character. But I a suggest to use a character from an Encrypted file.
Replacer = "¥";
CurrentText = textPane.getText();
if(ignorecase==1){
CurrentText = CurrentText.toLowerCase();
textToFind = TextToFind.toLowerCase();
}
int counter = 0;
readtext = new StringReader(CurrentText);
readBuffer = new BufferedReader(readtext);
try {
String Line = readBuffer.readLine();
int found = 0;
while(Line!=null || found != 1){
if(Line.contains(TextToFind)){
Line = null;
found = 1;
}
if(Line!=null){
Line = readBuffer.readLine();
counter = counter + 1;
}
}
if(found == 1){
textPane.setSelectionStart(CurrentText.indexOf(textToFind) - counter);
textPane.setSelectionEnd(CurrentText.indexOf(textToFind) + textToFind.length() - counter);
int counter2 = 1;
while(counter2!=textToFind.length()){
Replacer = Replacer + "¥";
counter2 = counter2 + 1;
}
CurrentText = CurrentText.replaceFirst(textToFind, Replacer);
findCounter = 1;
}
else{
optionPane.showMessageDialog(null, "No Matches.", "Message", 0);
}
}
catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch(NullPointerException e){
optionPane.showMessageDialog(null, "No Matches.", "Message", 0);
}
}
}
else{
int counter = 0;
readtext = new StringReader(CurrentText);
readBuffer = new BufferedReader(readtext);
try {
String Line = readBuffer.readLine();
int found = 0;
while(Line!=null || found != 1){
if(Line.contains(textToFind)){
Line = null;
found = 1;
}
if(Line!=null){
Line = readBuffer.readLine();
counter = counter + 1;
}
}
if(found == 1){
textPane.setSelectionStart(CurrentText.indexOf(textToFind) - counter);
textPane.setSelectionEnd(CurrentText.indexOf(textToFind) + textToFind.length() - counter);
CurrentText = CurrentText.replaceFirst(textToFind, Replacer);
}
else{
optionPane.showMessageDialog(null, "No Matches.", "Message", 0);
}
}
catch(IOException e){
e.printStackTrace();
} catch(NullPointerException e){
optionPane.showMessageDialog(null, "No Matches.", "Message", 0);
}
}
}